Formula for Area and Their Shapes

Writing Decimals as Fractions

1. Write down the decimal divided by the number of places represented in the decimal . Example: 1.98
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2. Multiply both top and bottom by 10 for every number after the decimal point.

3. Reduce the fraction.

Squaring Numbers That End in 5.

• Take the first number and multiply it by the next number. Example: 7 (Multiply it by 8)
• After getting the multiplied number, add 25 to it. Example: 7 x 8= 64 (Add 25) The final answer is 5,625.

Average Rate of Change

The change in the y-value divided by the change in the x-value for two distinct points on the graph.

Function

A pairing of inputs with outputs such that each input has exactly one output.

Independent Variable

The "input" variable.

Zero of a Function

An x-value that makes a function equal to zero.